Stackable Car-Go Corners

Update 06/21/24 v1.1: Version 1.1 was created for those concerned with durability and strength of the original. This version features a thicker bottom pad (3mm instead of 2mm), as well as added exterior thickness to the base. This new version still maintains the ability to be stacked and only adds about 20 minutes of additional print time. Feel free to increase infill as desired. The original 1.0 version will remain available as well. I don't like boxes sliding around while driving so I crea